Flanged conveyer belt



g- 4, 1931- F. N. WOODMAN 1 1,817,117

FLANGED CONVEYER BELT Filed Dec 24, 1928 Patented Aug. 4, 1931 UNITEDSTATES PATENT OFFICE FRANCIS N. WOODMAN, 0F CLINTON, MASSACHUSETTS,ASSIGNOR TO 'WICKWIRE SPENCER STEEL COMPANY, OF NEW YORK, N. Y., ACORPORATION OF DELAWARE ILANGED CONVEYER BELT Application filed December24, 1928. Serial No. 328,197.

This invention relates to a spiral wire belt of a type commonly used fortransporting a wide variety of materials.

It is the general object of my invention to provide a conveyer belt ofthespiral wire type so constructed that the carrying capacity thereof ismaterially increased.

A more specific object of myinvention is to provide a spiral wire beltwith upstanding flanges along the outer edges thereof, to-

ether with means for firmly supporting the anges.

A .further feature of my invention relates to the provision of means toprevent or substantially reduce transverse shrinkage in such a flangedconveyer belt.

My invention further relates to arrangements and combinations of partswhich will be hereinafter described and more particularly pointed out inthe appended claim.

A preferred form of the invention is shown in the drawings in which Fig.1 is a plan view of a portion of my improved belt;

Fig. 2 is an end elevation thereof; and Fig. 3 is a diagrammatic viewillustratlng the manner of using my improved belt.

Referring to the drawings, I have shown a portion of a spiral wire beltB formed of interlaced spiral members 10 extending transversely of thebelt and having their ends preferably looped together in pairs to form aselvage. The end portions of the spiral members 10 are bent upward outof the plane of the belt, and in the form shown in, the drawings theupwardly bent members stand at an angle of substantially ninety degreesto the body of the belt. This provides an upstanding flange 11 alongeach edge of the belt, as indicated in Figs. 2 and 3, which may be of adesired and substantial height and which permits. the belt to be usedfor trans ortin greatly increased loads of 'materialplaced thereon;

45 In order that the upstanding flanges may be firmly supported, Ireferably insert cross rods 12 transversely o the belt and bend the endportions thereof upward with the spiral members, as clearly indicated inFig. 2. The flanges 11 at both edges of the belt are thus firmlysupported in definite spaced relation.

The cross rods 12 extend through the coils of certain of the spiralmembers 10 and are preferably inserted in and between two adjacentcoils, as indicated in Fig. 1, so that the rod is engaged on oppositesides by the coils of two adjacent spiral members. When the belt isunder tension, a strong frictional contact is developed, which preventsany substantial transverse shrinkage of the belt. Transverse shrinkageis also resisted by the upturned ends of the cross rods 12.

The cross rods 12 are inserted at spaced intervals along the belt andare preferably inserted in and between the coils of each successive pairof spiral members, as shown in Fig. 1. The spacing of the cross rods maybe varied, however, to suit operating conditions.

Such flanged conveyer belts are useful for many different purposes andma be conveniently supported on spaced gui e rolls 20, as indicated inFig. 3. Such a flanged belt possesses greatly increased carryingcapacity,

ut the construction is such that the flexibility of the belt isretained, so that it may be free to bend as it passes around pulleys orguide-rolls. This flexibility of the belt is increased by the fact thatthe ends of the spiral members are commonly looped together in adjacentpairs only, permitting substantial relative movement between adjacentpairs.

Having thus described my invention and the advantages thereof, I do notwish to be limited to the details herein disclosed otherwise than as setforth in the claim, but what I claim is A spiral wire conveyor beltformed of a plurality of interlaced spiral wire members extendingtransversely of said belt, and a FRANCIS N. WOODMAN.

